The healerless clears are notworthy not because of healers being scared they'll be out of a job soon but because it informs how the game is played when they are present and that is boring one button spam while any needs to heal will be more and more relegated to your sequence of extremely powerful oGCDs while your 1 button damage filler takes up more and more of your time. The only people who do not have a majority of their actions be on glare are the people who simply do not press a GCD at all. The top healing log on EX1 has 0% Broil usage but they also only have 17% GCD uptime. Instead of engaging with scholar's damage "rotation" they have simply elected to do nothing instead.